Question

In Hydra, gastric enzymes are secreted by

• A. Epithelio-glandular cells
• B. Endothelio-muscular cells
• C. Epithelio-muscular cells
• D. Endothelio-glandular cells

Answer 1

The correct option is A Epithelio-glandular cells

The epitheliomuscular cells have both epithelial and muscular parts in the same cells. The epitheliomuscular cells of the epidermis are cylindrical with their inner ends produced into two or more processes which have myonemes or un-striped muscle fibers, these fibers branch and branches anastomose. The ectodermal myonemes run parallel to the long axis of the body and tentacles, they form longitudinal muscles which bring about the contraction of the body. The epitheliomuscular cell has a large nucleus, and along the border, there is a row of granules which secrete the cuticle.

So the correct answer is 'Epithelio-glandular cells'.